How do pressure reducing valves work? A pressure reducing valve is a valve which takes a high inlet pressure and reduces it to a lower outlet pressure. When it does this under both flow and no-flow conditions, the type of control is known as 'drop tight'.

What does the pressure reducing valve do?

Also called water pressure regulators, water pressure reducing valves are compact, inexpensive valves that perform two functions: They automatically reduce the high incoming water pressure from the city mains to provide a lower, more functional pressure for distribution in the home.

How do I know if my water pressure reducing valve is bad?